These trousers are 93% Viscose and 7% elastane, elastane is a synthetic fiber know for its exceptional elasticity. Its stronger and more durable then natural rubber. And was invented in 1958.
Where as viscose is a semi – synthetic fiber, is a solution of cellulose, extracted form trees, its quite like cotton however it s more weaker, so is normally made for a delicate, lighter garment. .
Topshop is owned by the Arcadia Group, which also owns Top man, which has reported that it is committed to the Sustainable Clothing Action Plan and its 2020 targets. Since 2015 its been a member of the Better Cotton Initiative. However it doesn't publicly share a list of supplier names and addresses of the manufacturers.